JPH11250545A - Record medium recording/reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the downward bending of a disk holder when a disk cartridge is inserted. SOLUTION: A magnetic disk device 11 is fixed on a frame 14 while a disk holder 12 for inserting a disk cartridge and a slider 13 slid back and forth for vertically moving the disk holder 12 are laid on each other. In the center of the overhead plate 12a of the disk holder 12, a fitting hole 12g is provided so as to be engaged with the slider 13. The slider 13 has an engaging part 13f engaged with the fitting hole 12g provided in the center of the top plate 12a of the disk holder 12 by an ejecting operation. Thus, by engagement of the fitting hole 12g of the disk holder 12 with the engaging part 13f of the slider 13, the center part of the disk holder 12 is prevented from being bent downward, and the clashing of the front end of the disk cartridge with a lower magnetic head 16 is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus for a recording medium, and more particularly to a sliding member which is unlocked and slid by rotating a latch lever in a process of inserting a recording medium into a holder. The present invention relates to a recording medium recording and reproducing apparatus having the same.

[0002]

2. Description of the Related Art For example, an electronic device such as a personal computer or a word processor is equipped with a magnetic disk device as a means for recording information. In a magnetic disk device of this type, when a disk cartridge as a recording medium is mounted, a magnetic disk accommodated in the disk cartridge is driven to rotate, and a magnetic head slides on the magnetic disk to perform magnetic recording and reproduction. It is configured as follows.

In the above-mentioned magnetic disk drive,
A disk holder into which a disk cartridge is inserted,
The recording medium mounting mechanism includes a slider for sliding the disk holder from the cartridge insertion / ejection position to the cartridge mounting position by sliding by a disk cartridge insertion operation. The slider is
When the disk cartridge is inserted, the latch lever is pressed by the end of the disk cartridge to rotate, and the latch by the latch lever is released by the coil spring. As a result, the slider slides in the biasing direction to move the disk holder to the cartridge mounting position. At this time, the disk holder is lowered from the cartridge insertion / ejection position to the cartridge mounting position, thereby chucking the disk in the disk cartridge on the turntable.

In the magnetic disk drive in which the disk cartridge is mounted to perform magnetic recording and reproduction as described above, the thickness and size of the device have been reduced, and accordingly, the intervals between the members have been reduced. More precise processing is required. However, as the thickness of the magnetic disk device is reduced, the gap between the insertion height of the disk cartridge inserted into the holder and the height of the lower magnetic head of the head carriage is reduced. Therefore, when the disk cartridge is warped so as to protrude downward, the front end of the disk cartridge inserted into the holder may abut on the lower magnetic head.

As described above, in order to prevent the front end of the disk cartridge from contacting the lower magnetic head when the disk cartridge is inserted into the holder, for example, the applicant of the present invention disclosed in Japanese Unexamined Patent Publication No. Hei. A configuration having an abutment prevention mechanism is proposed. The structure of the disc cartridge contact prevention mechanism is such that the holder support provided on the slider supports the top plate of the holder at the cartridge insertion / ejection position. Immediately before the slider is moved, the slider support operation causes the holder support portion of the slider to face the slit provided on the top plate of the holder and release the support of the disk holder.

[0006]

However, in the magnetic disk drive, since the slider is provided above the disk holder, the holder support provided on the slider extends below the disk holder. Since the configuration is such that the top plate of the holder is supported from below by being supported by the U-shaped arm portion, the space for disposing the holder support portion becomes large, and the space saving of the disk cartridge contact prevention mechanism is achieved. Therefore, it has been a problem that the miniaturization of the magnetic disk drive is hindered.

Accordingly, an object of the present invention is to provide a recording medium recording / reproducing apparatus which solves the above-mentioned problem.

[0008]

In order to solve the above problems, the present invention has the following features. The present invention provides a holder movably provided between a recording medium insertion / eject position in which a recording medium is inserted and a recording medium mounting position, and a holder in which the recording medium is inserted into the holder in an insertion direction. A rotating latch lever, which is unlocked by the rotating operation of the latch lever, slides in one direction, moves the holder to the recording medium mounting position, and slides the holder in the other direction. A recording / reproducing apparatus having a sliding member for returning to the recording medium insertion / ejection position, wherein an engaging portion is provided at the center of the sliding member, and the sliding member is provided when the holder is at the recording medium insertion / ejection position. A fitting portion for fitting to the engaging portion of the moving member is provided at the center of the top plate of the holder.

Therefore, according to the present invention, the engaging portion is provided at the center of the sliding member, and the fitting portion which fits into the engaging portion of the sliding member when the holder is at the recording medium insertion / ejection position. Before the recording medium is inserted, the engaging portion of the sliding member and the engaging portion of the holder are engaged with each other to reinforce the center of the top plate of the holder. The center can be prevented from bending downward. Therefore, the recording medium inserted into the holder is prevented from colliding with the lower magnetic head. In addition, since the center of the sliding member and the center of the top plate of the holder are merely connected to each other, instead of separately providing a member for supporting the holder, the installation space can be reduced and the space can be saved. This can promote downsizing of the device.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a recording medium recording / reproducing apparatus according to the present invention will be described below with reference to the drawings. FIG.
1 is an exploded perspective view showing a schematic configuration of a magnetic disk device 11 as one embodiment of a recording medium recording / reproducing apparatus according to the present invention. FIG. 2 is an exploded perspective view showing a cover, a slider, a holder, and a frame in an enlarged manner. FIG. 3 (A)
(C) is a plan view, a rear view, and a side view showing a state where the slider and the holder are combined.

As shown in FIGS. 1 to 3, the magnetic disk drive 11 includes a disk holder 12 into which a disk cartridge (not shown) is inserted, and a slider for sliding the disk holder 12 up and down by sliding in the front-rear direction. (Sliding member)
13 are mounted on the frame 14 in a state where they are overlapped with each other. The slider 13 is A, B on the disk holder 12.
The disc holder 12 is slidably moved in the direction A by the insertion operation of the disc cartridge to lower the disc holder 12 from the cartridge insertion / ejection position to the cartridge mounting position.

The disk holder 12 includes a top plate 12a, and cartridge guide portions 12b and 12c bent so as to hold the disk cartridge from both sides of the top plate 12a. Therefore, a space surrounded by the top plate 12a and the cartridge guide portions 12b and 12c on both sides becomes a cartridge insertion portion. The top plate 12a of the disk holder 12 is provided with an opening 12d for moving the head carriage 18, and a pair of support portions 12h for rotatably supporting the lift arm 42 is cut and raised on the left side of the opening 12d. ing. An opening 12d provided at the center of the top plate 12a
A fitting hole 12g for engaging with the slider 13 is provided in the cut-and-raised portion forming the outline of the slider 13 in order to prevent bending before the disk cartridge is inserted.

The slider 13 includes a flat plate 13a that slides above the disk holder 12, side surfaces 13b and 13c bent downward from both sides of the flat plate 13a, and side surfaces 13b and 13c.
c, an inclined groove 13d in which the engaging pin 12e of the disc holder 12 is fitted, and both side surfaces 14e of the frame 14,
It has a contact portion 13e that contacts the upper end of 14f, and an engaging portion 13f that engages with a fitting hole 12g provided in the center of the top plate 12a of the disc holder 12 by an eject operation.

For this reason, in this embodiment, the disk cartridge 12 prevents the front end of the disk cartridge from colliding with the lower magnetic head when the disk cartridge is inserted, by the fitting hole 12g of the disk holder 12 and the engaging portion 13f of the slider 13. A contact prevention mechanism is configured.
The slider 13 is provided on the flat plate 13a of the slider 13.
13g and 13h are provided in which coil springs 51 and 52 for urging in the direction A are mounted. This opening 13
g and 13h are formed to extend in the A and B directions, and hook portions 13i and 13j to which one ends of the coil springs 51 and 52 are hooked protrude from ends in the B direction. In addition, the coil spring 5
The other ends of the discs 1 and 52 are hooked by hooks 12 i and 12 j protruding from the top plate 12 a of the disc holder 12. Therefore, the slider 13 is urged in the direction A by the spring force of the coil springs 51 and 52.

FIG. 4A is a plan view showing the structure of the frame 14. FIG. 4B is a rear view showing the structure of the frame 14. As shown in FIGS. 1 to 4, a circular opening 1 into which a turntable 15 for clamping a disc is inserted is provided on a plane 14 a of the frame 14.
4b, and a carriage mounting portion 14c to which a head carriage 18 supporting the magnetic heads 16 and 17 is slidably mounted in the A and B directions. At the rear of the frame 14, a motor mounting portion 14d to which a motor 25 for driving the head carriage 18 is mounted is provided.

Both sides of the carriage mounting portion 14c and the motor mounting portion 14d are cut into a rectangular shape.
Therefore, the rear part of the frame 14 is
Only 4c and the motor mounting portion 14d have a shape protruding rearward. Also, both side surfaces 14e, 1 of the frame 14
Guide grooves 14g and 14h for guiding the elevating operation of the disk holder 12 are provided at an intermediate position of the inner wall of 4f. Further, a circuit board 20 on which a turntable 15 and a disk motor 19 for rotating the turntable 15 are mounted is mounted on the lower surface side of the frame 14.

The head carriage 18 has a carriage main body 21 that supports the lower magnetic head 16 on the top end, and a carriage main body 21 that supports the upper magnetic head 17 on the bottom end.
And a head arm 22 rotatably attached to the head arm 22. Further, the head carriage 18 is guided by the guide shaft 23 and the lead screw 24 extending in the front-rear direction (A and B directions) and according to the rotation amount of the lead screw 24 in the direction corresponding to the rotation direction of the lead screw 24. Move a distance. Guide shaft 23
Is held on a flat surface 14a of the frame 14 by a plate-shaped pressing member (not shown), and is inserted into a fitting portion 21a provided on the right side surface of the carriage body 21.
Further, the lead screw 24 is screwed to a screwing portion (not shown) provided on the left side surface on the opposite side of the carriage main body 21.

A motor 25 for rotating and driving the lead screw 24 is mounted on a lower surface of a motor mounting portion 14d provided at a rear portion of the frame 14. for that reason,
The head carriage 18 moves in the A and B directions while being guided by the guide shaft 21 and the guide shaft 24 by the rotational driving force of the motor 25 that rotationally drives the lead screw 24. Thus, the magnetic heads 16 and 17 supported by the head carriage 18 can perform magnetic recording / reproduction by sliding in contact with desired tracks of a magnetic disk (not shown) stored in a disk cartridge. .

On the plane 14a of the frame 14,
A protector 26 for preventing the end of the disk cartridge inserted into the disk holder 12 from colliding with the lower magnetic head 16 is provided so as to be slidable in the C and D directions by being guided by a pin 14i projecting above the plane 14a. Have been.
The protector 26 is connected to a pin 27 a provided at one end of an L-shaped link 27, and a pin 27 b provided at the other end of the link 27 is engaged with an engagement portion 13 k of the slider 13.

Therefore, before the disk cartridge is inserted into the disk holder 12, the protector 26 is close to the side of the lower magnetic head 16. At this time, the protector 26 rides on the inclined portion 28 formed on the plane 14 a of the frame 14 and is lifted above the lower magnetic head 16. Accordingly, the disk cartridge is prevented from sliding above the protector 26 and moving above the lower magnetic head 16 to collide with the lower magnetic head 16.

Then, the slider 13 slides in the direction A and at the same time separates from the lower magnetic head 16. Therefore, when the slider 13 slides in the direction A, the protector 26 slides in the direction D and descends below the inclined portion 28, and the magnetic disk is brought into contact with the lower magnetic head 16. FIG. 5 is an exploded perspective view for explaining the configuration of the latch mechanism.

As shown in FIGS. 1 and 5, at the rear of the upper surface of the disk holder 12, a latch mechanism 36 for latching the slider 13 is provided. This latch mechanism 36
Are a latch lever 38 rotatably supported on the upper surface of the disk holder 12, a coil spring 39 for urging the latch lever 38 to rotate counterclockwise, and a cam portion provided on the top plate 13a of the slider 13. 46.

FIGS. 6A to 6E are a plan view, a side view, a rear view, an enlarged plan view, and an enlarged side view for explaining the shape of the latch lever. As shown in FIGS. 6A to 6E, the latch lever 38 has a disk holder 1 at one end.
2 has a shaft hole 38a through which a shaft at the rear of the upper surface is inserted, and a claw portion 38b at the other end for opening a shutter (not shown) of the disk cartridge. The latch lever 38 has a hook portion 38c at which one end of the coil spring 39 is hooked at the middle in the longitudinal direction, and a sliding contact portion 38d which comes into sliding contact with the cam portion of the slider 13. The other end of the coil spring 39 is hooked on a hook 12k provided on the top plate 12a of the disc holder 12.

A locking portion 38e for preventing the slider 13 from coming off is bent at the upper end of the sliding contact portion 38d. A restricting portion 38f that regulates the rotation height position is provided on the upper portion of the claw portion 38b so that the claw portion 38b is held at the insertion height position of the disc cartridge inserted into the disc holder 12. I have. As shown in FIG. 5, a shaft which is inserted through a shaft hole 38a of the latch lever 38 and supports the latch lever 38 so as to be rotatable in the E and F directions is provided at a rear portion of the top plate 12a of the disk holder 12. 1
2m, a disengagement prevention portion 12n that is inserted into the groove 38g of the latch lever 38 at the time of assembling and that restricts the upward movement of the latch lever 38 thereafter protrudes. Pull-out prevention unit 12
n is a projection 12 that regulates the height position of the upper surface of the latch lever 38 so that the latch lever 38 does not come off the shaft 12m.
n ₁ is protruded in a horizontal direction. Further, the top plate 12a of the disk holder 12 is provided with a fan-shaped opening 12o. The claw 38b of the latch lever 38 is inserted through the opening 12o.

Further, on both sides of the disk holder 12,
A pair of engaging pins 12e is provided for engaging with the slider 13.
f is protruding. The guide portion 12f is used for the frame 1
The guide grooves 14g provided in the side walls 14e, 14f
14h to guide the elevating operation of the disk holder 12.

On the upper surface of the disk holder 12, there is provided a head arm lift mechanism 41 for holding the head arm 22 at a raised position where it does not come into contact with the disk cartridge when no disk cartridge is inserted. I have. This head arm lift mechanism 41
Is a lift arm 4 that contacts the lower surface of the head arm 22.
2, a lifter 43 for pressing the lift arm 42 upward in the non-inserted state, and a pressing spring 44 for pressing the lift arm 42 downward.

The lift arm 42 is in contact with the lower surface of a protruding portion 22a protruding from both sides of the head arm 22, and is mounted so as to be rotatable vertically about both ends of the pressing spring 44 as axes. Below the lift arm 42, a lifter 43 that slides in the A and B directions by the sliding operation of the slider 13 is provided. Therefore, when the disk cartridge is not inserted, the lifter 43 presses the lift arm 42 upward, whereby the head arm 22 rotates upward and the upper magnetic head 17 is retracted above the disk holder 12. .

Further, the disk cartridge is inserted into the disk holder 12, the slider 13 slides in the direction A, and the lifter 43 is separated from the lift arm 42. Thus, the lift arm 42 is lowered to the mounting position in a state where the holding force of the lifter 43 is removed. For this reason, the magnetic disk stored in the disk cartridge is sandwiched between the lower magnetic head 16 and the upper magnetic head 17 for magnetic recording or reproduction while the head arm 22 rotates downward.

Further, the lift arm 42 is supported by a support portion 12h standing upright on the top plate 12a of the disc holder 12 by passing both ends of the pressing spring 44 through the cut-and-raised portion 42a of the lift arm 42. Since the support portion 12h is formed in a direction extending in the E and F directions, the lift arm 42 is mounted so as to be rotatable in a vertical direction orthogonal to the carriage movement direction (A and B directions).

A cover 45 is provided above the slider 13 so as to cover an upper portion of the frame 14. The cover 45 is screwed to both sides of the frame 14 to prevent the slider 13 from floating upward, and furthermore, the front and rear direction (A and B directions) of the slider 13.
Guide the movement of As shown in FIGS. 1, 2, 3, and 7, a cam portion 46 for engaging the above-mentioned latch lever 38 is provided on the flat plate 13 a of the slider 13. The cam portion 46 has an arc-shaped portion 47 in which the sliding portion 38d of the latch lever 38 slides while moving in the rotating direction in the process of inserting the disk cartridge, and an arc-shaped portion 47 when the insertion of the disk cartridge is completed. Escape portion 48 formed in a direction away from the sliding contact portion 38d passing through
And

The flat plate 13a of the slider 13 has
The cam portion 46 is formed, and a fan-shaped opening 49 for moving with the sliding portion 38d inserted is provided. Further, outside the opening 49, the latch lever 38 is provided.
And an arc-shaped opening 50 which is provided at the tip of the disk cartridge and faces the rotation range of the claw portion 38b which engages with the shutter of the disk cartridge.

Further, a contact portion 53 extending in the direction B is provided at the rear of the flat plate 13a of the slider 13.
The contact portion 53 is a motor mounting portion 14 provided at the rear portion of the frame 14 while the slider 13 slides in the A and B directions.
d, and comes into contact with the guide wall 52 rising above
3 to guide the sliding operation and prevent the slider 13 from rotating during the eject operation.

FIG. 8 is an exploded perspective view showing the contact portion 53 and the guide wall 52 in an enlarged manner. FIG. 9 is a longitudinal sectional view showing a state where the contact portion 53 and the guide wall 52 are combined. As shown in FIGS. 8 and 9, the guide wall 52
It has a projection 52a at the upper end and a step 52b on the left side of the projection 52a, and extends in the A and B directions, which are the sliding directions of the slider 13. The contact portion 53 has an L-shaped cross section corresponding to the upper shape of the guide wall 52, and includes a horizontal portion 53a extending in the horizontal direction and a vertical portion 53b extending in the vertical direction. Having.

For this reason, the contact portion 53 is such that the horizontal portion 53 a contacts the upper surface of the projection 52 a of the guide wall 52 and the vertical portion 53
b engages with the upper portion of the guide wall 52 so as to contact the left side surface of the projection 52a of the guide wall 52. As a result, the slider 13 causes the guide wall 52 via the contact portion 53 to move
The sliding operation in the direction B is guided, and the clockwise rotation as viewed from above is prevented. That is, the eject button 54 is attached to the upper part of the slider 13 as shown in FIG.

Since the mounting position of the eject button 54 is on the upper left side of the slider 13, when the eject button 54 is pressed in the direction B, a force for rotating the slider 13 clockwise acts. However, the slider 13
Has the contact portion 53 formed so as to contact the left side surface of the projection 52a of the guide wall 52 as described above. Therefore, even if the eject button 54 is ejected, the eject button 54 does not rotate but moves in the direction B. Guided.

FIG. 10 shows the top plate 12a of the disc holder 12.
FIG. 7 is a perspective view showing a state where a latch lever 38 is attached to the circumstance. FIG. 11 is a perspective view showing a state in which the slider 13 is mounted above the latch lever 38. As shown in FIG. 10, when the disk cartridge is inserted into the disk holder 12, the latch lever 38 rotates in the direction E against the spring force of the coil spring 39. At this time, the shutter of the disk cartridge engages with the claw 38b provided at the tip of the latch lever 38 and slides in the opening direction.

The latch lever 38 has a slider 13 at the rear.
No projection is provided on the disk holder 12 even if the cam is rotated in the E direction. Further, as shown in FIG. 11, the rear end of the slider 13 is located on the front side of the rear end of the disk holder 12, so that there is nothing protruding rearward from the disk holder 12. Therefore, there is no need to secure a space behind the latch lever 38, and the shape of the frame 14 is correspondingly reduced on both sides of the carriage mounting portion 14c and the motor mounting portion 14d as shown in FIG. It has a shape. Therefore, the frame 14
The installation space of the magnetic disk drive 11 can be reduced, and the magnetic disk drive 11 can be reduced in size and space.

Next, a description will be given of a disk mounting operation of the magnetic disk device 11 configured as described above. FIG.
3A to 3D are a plan view, a left side view, a right side view, and a front view showing a positional relationship between the disk holder 12 and the slider 13 in a state where the disk cartridge is ejected.

As shown in FIGS. 12A to 12D,
The disk holder 12 is provided in the inclined groove 13 d of the slider 13.
Is engaged, the sliding operation of the slider 13 drives the engagement pin 12e along the inclined groove 13d. Therefore, when the slider 13 slides in the direction B, the disk holder 12 moves up to the cartridge insertion / ejection position, and when the slider 13 slides in the direction A, it moves down to the cartridge mounting position.

FIG. 13 shows the fitting hole 12 of the disc holder 12.
FIG. 9 is an enlarged longitudinal sectional view showing a state in which an engagement portion 13f of a slider 13 is fitted to g. As shown in FIG.
When the disc holder 12 is at the cartridge insertion / ejection position, the engaging portion 13f of the slider 13 is fitted into the fitting hole 12g of the disc holder 12. The engaging portion 13f of the slider 13 has a cross-sectional shape bent into a crank shape to enhance the strength.
Abuts the upper fitting edge 12g.

Thus, the central portion of the disk holder 12 is supported by the engaging portion 13f of the slider 13, and is prevented from warping downward. Therefore, when a disk cartridge (not shown) is inserted into the disk holder 12 in the ejected state shown in FIG. 10, collision with the lower magnetic head 16 is prevented. As described above, the engagement between the fitting hole 12g of the disk holder 12 and the engagement portion 13f of the slider 13 prevents the central portion of the disk holder 12 from warping downward. The device can be made small and space can be saved, so that the device can be downsized.

Further, the disk cartridge is inserted into the disk holder 12, and the claw 38b of the latch lever 38 is pressed to rotate clockwise (direction E).
The sliding portion 38d of the latch lever 38 is
The arc-shaped portion 47 of the cam portion 46 provided on the top plate 13a of No. 3
Slide in contact. Disk cartridge is disk holder 1
When the shutter is inserted to the back of
8, and the sliding contact portion 38d of the latch lever 38 passes through the arc-shaped portion 47 of the cam portion 46 and faces the escape portion 48 of the cam portion 46. Therefore, since the latch 13 is released from the latch by the latch lever 38, the slider 13 slides in the direction A by the spring force of the coil springs 51 and 52.

FIGS. 14A to 14D are a plan view, a left side view, and a right side view showing the positional relationship between the disk holder 12 and the slider 13 with the disk cartridge mounted.
It is a front view. FIG. 15 is a perspective view showing a state where the disk cartridge is mounted. FIG.
(D) and as shown in FIG.
2 is supported on the left and right side surfaces of the frame 14 so as to be movable only in the vertical direction. Thus, when the slider 13 slides in the A direction, the engaging pin 12e of the disk holder 12 And is lowered from the cartridge insertion / ejection position shown in FIG. 12 to the cartridge mounting position shown in FIG.

When the slider 13 starts to slide in the direction A, the engaging portion 13f of the slider 13 is disengaged from the fitting hole 12g of the disk holder 12 and the disk holder 1
Release support for the central part of 2. Thus, the disk holder 12 can be lowered to the cartridge mounting position. When the disk holder 12 descends to the cartridge mounting position as described above, the engaging portion 13f of the slider 13 separates from the fitting hole 12g of the disk holder 12 in the direction A as shown in FIG. The protruding direction is relatively small, the protruding length is relatively small, and the configuration is compact.

In the ejecting operation, when the slider 13 is slid in the direction B, the disk holder 12 performs an operation reverse to the above-mentioned mounting operation and returns to the cartridge insertion / ejection position shown in FIG. At the same time, the disc cartridge is ejected in the direction A while the latch lever 38 rotates in the direction F by the spring force of the coil spring 39. By this ejecting operation, the disc cartridge is ejected from the disc holder 12 after the shutter is closed.

In the above embodiment, the magnetic disk device has been described as an example. However, the present invention is not limited to this. For example, a card-shaped recording medium such as an optical disk device, a magneto-optical disk device, or a memory card may be mounted. Needless to say, the present invention can be applied to a recording / reproducing apparatus and the like.

[0047]

As described above, according to the present invention, the engaging portion is provided at the center of the sliding member, and is fitted to the engaging portion of the sliding member when the holder is at the recording medium insertion / ejection position. Since the fitting portion is provided at the center of the top plate of the holder, before the recording medium is inserted, the engaging portion of the sliding member and the fitting portion of the holder engage with each other to reinforce the center of the top plate of the holder, The center of the top plate of the holder can be prevented from bending downward. Therefore, the recording medium inserted into the holder is prevented from colliding with the lower magnetic head. In addition, since the center of the sliding member and the center of the top plate of the holder are merely connected to each other, instead of separately providing a member for supporting the holder, the installation space can be reduced and the space can be saved. This can promote downsizing of the device.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a schematic configuration of a magnetic disk device as one embodiment of a recording medium recording / reproducing apparatus according to the present invention.

FIG. 2 is an exploded perspective view showing a cover, a slider, a holder, and a frame in an enlarged manner.

FIG. 3 is a diagram showing a state where a slider and a holder are combined.

FIG. 4 is a diagram showing a configuration of a frame.

FIG. 5 is an exploded perspective view for explaining a configuration of a latch mechanism.

FIG. 6 is a diagram for explaining a shape of a latch lever.

FIG. 7 is a diagram for explaining a shape of a slider.

FIG. 8 is an exploded perspective view showing a contact portion and a guide wall in an enlarged manner.

FIG. 9 is a longitudinal sectional view showing a state where the contact portion and the guide wall are combined.

FIG. 10 is a perspective view showing a state where a latch lever is attached to a top plate of the disk holder.

FIG. 11 is a perspective view showing a state where a slider is mounted above a latch lever.

FIG. 12 is a diagram showing a positional relationship between a disk holder and a slider in a state where the disk cartridge has been ejected.

13 is an enlarged longitudinal sectional view showing a state in which an engagement portion 13f of a slider 13 is fitted into a fitting hole 12g of the disk holder 12. FIG.

FIG. 14 is a diagram showing a positional relationship between a disk holder and a slider in a state where a disk cartridge is mounted.

FIG. 15 is a perspective view showing a state where a disk cartridge is mounted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Disk device 12 Holder 12a Top plate 12g Fitting hole 13 Slider 13a Flat plate 13f Engaging portion 14 Frame 15 Turntable 16, 17 Magnetic head 18 Head carriage 24 Lead screw 25 Drive motor 36 Latch mechanism 38 Latch lever 46 Cam portion 47 Circle Arc-shaped part 48 Escape part 52 Guide wall 53 Contact part 54 Eject button

Claims (1)

[Claims] 1. A holder movably provided between a recording medium insertion / ejection position into which a recording medium is inserted and a recording medium mounting position, and an insertion direction in a process of inserting the recording medium into the holder. A latch lever that pivots in the direction indicated by the arrow, and is released by the rotation of the latch lever, slides in one direction, moves the holder to the recording medium mounting position, and slides the holder in the other direction. And a sliding member for returning the recording medium to the recording medium insertion / eject position, wherein an engaging portion is provided at the center of the sliding member, and the holder is at the recording medium insertion / eject position. A recording medium recording / reproducing apparatus, wherein a fitting portion for fitting to the engaging portion of the sliding member is provided at the center of the top plate of the holder.